The difference between circumference and semidiameter of a circle is 37 cm. What is the diameter of the circle ?
Solution
Correct Answer: Option D
Circumference of a circle = 2\(\mathrm\pi\)r
=> 2 × 22/7 × r – r = 37
=> 37/7 × r = 37
=> r = 7 cm.
Diameter D = 2r = 7×2 = 14 cm.
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